Dallas Independent School District

1. Under the Influence
November 20, 2014
Dallas Independent School District
By: ChinLin Pan, Hymi Ashenafi,
Taylor Turner and Keneshia Colwell

2. Dallas ISD
– Dallas ISD is the second-largest public school
district in Texas and the 14th largest district in
the nation.
– The district has 220 schools with 157,000
students, Pre K-12.
– The district also employs nearly 20,000
professionals.

3. Data items we looked at:
• Teacher turnover rate: Percentage of
teachers who left the district. Various
reasons can contribute to the reason of
departure, including demographics or
salary.
• Teacher-student ratio: This is the number
of students per teacher.
• High school graduation rates.

4. • We also looked at several neighboring
districts of Dallas ISD, namely Plano,
Garland and Richardson.
• We looked at the turnover rate, teacher-student
ratio and graduation rate of all four
districts.

5. Map of districts we researched:

6. Here is a general map of Dallas and the
bigger cities around it to give an idea
of where Dallas is:

7. Steps taken to reach data source:
• TEA Website
• Clicked “Reports &
Data”
• Clicked “Academic
Excellence
Indicator”
• Clicked the year
“2011”
• Clicked “districts”

8. Ed Timms Datasheet

9. Information on upcoming graphs:
• We looked at turnover rates versus graduation rates and found
a correlation.
• The less of a teacher turnover rate, the more students
graduate.
• In each graph, we’ve compared all the listings side by side by
district.
• The Y axis is the percentage for each X category. Since
graduation rates skewed the data, we divided the actual
graduation rate by 10 to fit the graph visually.
– Dallas: 77.3/%10= 7.73
– Garland: 87.7%/10= 8.77
– Richardson: 91.1%/10= 9.1
– Plano: 93.4%/10= 9.34
– These numbers are displayed in each graph as the smallest number
listed above.

10. GRAPH 1
• Here is a graph of Dallas ISD and its teacher-student
ratio, turnover rate and graduation rate:

11. GRAPH 2
• Here is a graph of Richardson ISD and its teacher-student
ratio, turnover rate and graduation rate:

12. GRAPH 3
• Here is a graph of Garland ISD and its teacher-student
ratio, turnover rate and graduation rate:

13. Graph 4
• Here is a graph of Plano ISD and its teacher-student
ratio, turnover rate and graduation rate:

14. Trend we found:
• The lower the teacher/student ratio, the higher the
graduation rate. For example, Plano ISD has the lowest
teacher/student ratio (14.5) and the highest graduation rate.
(93.4%)
• Richardson ISD has the second lowest teacher/student ratio
(15.3) and the second highest graduation rate. (91.1%)
• Dallas ISD has second highest teacher/student ratio (15.3) and
the lowest graduation rate. (77.3%)
• Garland ISD has the highest teacher/student ratio (15.9) and
the second lowest graduation rate. (87.7%)